Needle-knife fistulotomy vs double-guidewire technique in patients with repetitive unintentional pancreatic cannulations

Table 2 Clinical outcomes of the patients n (%)

	Early NKF group	DGT group	P value
Success rate of	53 (79.1)	30 (44.8)	< 0.001
assigned technique
Total success rate of
1st ERCP	53 (79.1)	55 (82.1)	0.662
2nd ERCP	61 (91.0)	62 (92.5)	0.753
Cannulation time after assignment, mean ± SD	4 min 17 s ± 115 s	5 min 12 s ± 137 s	0.013
Pancreatitis, total	3 (4.5)	10 (14.9)	0.041
Mild	1	5
Moderate	2	5
Hyperamylasemia	20 (29.9)	21 (31.3)	0.851
Perforation1	0	1	1.000

¹A perforation occurred during NKF in the DGT group and was treated conservatively. ERCP: Endoscopic retrograde cholangiopancreatography; NKF: Needle-knife fistulotomy; DGT: Double-guidewire technique.